309 lines
8.7 KiB
Python
309 lines
8.7 KiB
Python
import itertools
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import io
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from fastapi.responses import StreamingResponse
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from pathlib import Path
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import pyvips
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import logging
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from perlin import CoordsGenerator
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import svg
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import numpy as np
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import uvicorn
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from fastapi import FastAPI
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from fastapi.middleware.cors import CORSMiddleware
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app = FastAPI(title="Speckles API", root_path="/images")
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origins = [
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"http://localhost",
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"http://localhost:3000",
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"https://localhost",
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"https://0124816.xyz",
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"http://0124816.xyz:3001",
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]
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app.add_middleware(
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CORSMiddleware,
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allow_origins=origins,
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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RGen = np.random.default_rng()
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MEDIA_TYPES = {
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"png": "image/png",
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"jpeg": "image/jpeg",
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"jpg": "image/jpeg",
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"svg": "image/svg+xml",
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"pdf": "application/pdf",
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}
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def emoji(marker: str, source="twemoji"):
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if len(marker) != 1:
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return
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if source == "openmoji":
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scaler = 512
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file = hex(ord(marker))[2:].upper()
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elif source == "twemoji":
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scaler = 768
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file = hex(ord(marker))[2:]
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file = Path(f"{source}/{file}.svg")
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if file.is_file():
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return svg.G(
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elements=[Include(text=file.read_text())],
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id=marker,
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transform=[svg.Scale(100 / scaler)],
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)
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class Include(svg.Element):
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element_name = "svg"
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transform: list[svg.Transform] | None = None
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def __str__(self) -> str:
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return self.text
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DEFINED = ".o+tYP-|sSex*"
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def markertoSVG(marker, x, y, c, s):
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if marker == ".":
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return svg.Circle(cx=x, cy=y, fill=c, r=np.sqrt(s))
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elif marker == "o":
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return svg.Circle(
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cx=x,
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cy=y,
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stroke=c,
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fill="none",
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stroke_width=np.sqrt(s / 4),
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r=np.sqrt(s),
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)
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elif marker == "+":
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shift = np.sqrt(s)
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return svg.Path(
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stroke=c,
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stroke_width=np.sqrt(s) / 4,
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stroke_linecap="round",
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d=[
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svg.M(x - shift, y), # horizontal line
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svg.L(x + shift, y),
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svg.M(x, y - shift), # vertical line
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svg.L(x, y + shift),
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],
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)
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elif marker == "t":
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shift = np.sqrt(s)
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return svg.Polygon(
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stroke=c,
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stroke_width=np.sqrt(s) / 4,
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stroke_linejoin="round",
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points=[
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x + shift * np.sqrt(3) / 2,
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y - shift / 2,
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x - shift * np.sqrt(3) / 2,
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y - shift / 2,
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x,
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y + shift,
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],
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transform=[svg.Rotate(RGen.random() * 360, x, y)],
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)
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elif marker == "Y":
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shift = np.sqrt(s)
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return svg.Path(
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stroke=c,
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stroke_width=np.sqrt(s) / 4,
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stroke_linecap="round",
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d=[
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svg.M(x + shift * np.sqrt(3) / 2, y - shift / 2), # / line
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svg.L(x, y),
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svg.M(x - shift * np.sqrt(3) / 2, y - shift / 2), # / line
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svg.L(x, y),
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svg.M(x, y + shift), # / line
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svg.L(x, y),
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],
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transform=[svg.Rotate(RGen.random() * 360, x, y)],
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)
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elif marker == "P":
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shift = np.sqrt(s)
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return svg.Path(
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stroke=c,
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stroke_width=np.sqrt(s) * 2 / 3,
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d=[
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svg.M(x - shift, y), # horizontal line
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svg.L(x + shift, y),
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svg.M(x, y - shift), # vertical line
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svg.L(x, y + shift),
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],
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)
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elif marker == "-":
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shift = np.sqrt(s)
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return svg.Path(
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stroke=c,
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stroke_width=np.sqrt(s) / 4,
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d=[
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svg.M(x - shift, y), # horizontal line
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svg.L(x + shift, y),
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],
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)
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elif marker == "|":
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shift = np.sqrt(s)
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return svg.Path(
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stroke=c,
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stroke_width=np.sqrt(s) / 4,
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d=[
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svg.M(x, y - shift), # vertical line
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svg.L(x, y + shift),
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],
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)
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elif marker == "s":
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shift = np.sqrt(s) * 2
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return svg.Rect(x=x, y=y, width=shift, height=shift, fill=c)
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elif marker == "S":
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s = np.sqrt(s) * 2
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return svg.Rect(x=x, y=y, width=s, height=s, fill=c, rx=s / 3, ry=s / 3)
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elif marker == "e":
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s = np.sqrt(s * 2)
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return svg.Ellipse(
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cx=x,
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cy=y,
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fill=c,
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rx=s,
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ry=s / 2,
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transform=[svg.Rotate(RGen.random() * 360, x, y)],
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)
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elif marker == "x":
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shift = np.sqrt(s)
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scale = np.sqrt(2) / 2
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return svg.Path(
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stroke=c,
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stroke_width=np.sqrt(s) / 4,
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stroke_linecap="round",
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d=[
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svg.M(x - shift * scale, y - shift * scale), # / line
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svg.L(x + shift * scale, y + shift * scale),
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svg.M(x - shift * scale, y + shift * scale),
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svg.L(x + shift * scale, y - shift * scale), # / line
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],
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)
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elif marker == "*":
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shift = np.sqrt(s)
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return [
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svg.Path(
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stroke=c,
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stroke_width=np.sqrt(s) / 4,
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stroke_linecap="round",
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transform=[svg.Rotate(angle, x, y)],
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d=[
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svg.M(x - shift, y),
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svg.L(x + shift, y),
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],
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)
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for angle in (0, 60, -60)
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]
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else:
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return svg.Use(
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href=f"#{marker}",
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transform=[svg.Translate(x=x, y=y), svg.Scale(np.sqrt(s) / 100)],
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)
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@app.get("/speckles/")
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def make_wallpaper(
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speckle_colours: str,
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density: float = 0.12,
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size: float = 3,
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fileformat: str = "svg",
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orientation: str = "landscape",
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filename: str = "",
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markers: str = ".",
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perlin: bool = True,
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):
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speckle_colours = speckle_colours.split(",")
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background = speckle_colours.pop(0)
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if orientation == "portrait":
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x, y = (1080, 1920)
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elif orientation == "landscape":
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x, y = (1920, 1080)
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elif "x" in orientation:
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resolution = orientation.split("x")
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if len(resolution) != 2:
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logging.critical("input resolution has more or less than 2 dimensions")
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return
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x, y = resolution
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if all([x.isdigit(), y.isdigit()]):
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x, y = int(x), int(y)
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else:
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return
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else:
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x, y = (1920, 1080)
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speckles_per_colour = int(x / 128 * y / 128 * density / len(markers))
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if perlin:
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gen = CoordsGenerator(x, y)
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elements = [svg.Rect(width=x, height=y, fill=background)]
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style = svg.Style(
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text="\n".join(
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[f".c{colour[1:]} {{ fill: {colour}; }}" for colour in speckle_colours]
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)
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)
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elements.append(style)
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style = svg.Style(
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text="\n".join(
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[
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f'.s{hex(int(size*100))[2:]} {{ font-family: "OpenMoji"; font-size: {int(np.sqrt(size)*16)}px; }}'
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for size in np.logspace(0, size, 10, base=np.exp(2))
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]
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)
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)
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elements.append(style)
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elements.append(
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svg.Defs(
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elements=[emoji(marker) for marker in markers if marker not in DEFINED]
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)
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)
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for colour, marker, size in itertools.product(
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speckle_colours,
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markers,
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np.logspace(0, size, 10, base=np.exp(2)),
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):
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if perlin:
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xs, ys = gen.pick(speckles_per_colour)
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else:
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xs, ys = zip(
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RGen.random(speckles_per_colour) * x,
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RGen.random(speckles_per_colour) * y,
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)
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elements.extend(
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[markertoSVG(marker, x, y, colour, size) for x, y in zip(xs, ys)]
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)
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content = svg.SVG(width=x, height=y, elements=elements)
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if filename:
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if Path(filename).suffix == ".svg":
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with open(filename, "wt") as f:
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f.write(content.as_str())
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else:
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with pyvips.Image.svgload_buffer(content.as_str().encode("utf-8")) as image:
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image.write_to_file(filename)
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return filename
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elif fileformat:
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if fileformat == "svg":
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buf = io.BytesIO(content.as_str().encode("utf-8"))
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buf.seek(0)
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elif fileformat in ["jpg", "png"]:
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with pyvips.Image.svgload_buffer(content.as_str().encode("utf-8")) as image:
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data = image.write_to_buffer("." + fileformat)
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buf = io.BytesIO(data)
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buf.seek(0)
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return StreamingResponse(content=buf, media_type=MEDIA_TYPES[fileformat])
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if __name__ == "__main__":
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uvicorn.run("speckles:app", workers=3, port=8099)
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